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post #1 of 4 (permalink) Old 05-03-06, 01:42 PM Thread Starter
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what speed should OD engage?

I have an 05 Explorer 4.0L 2WD which at about 48 mph the OD kicks in and RPMs drop to about 1500. When this happens a moaning sound can be heard from the front of the vehicle, espcially if I acclerate. Sometimes a faint rattling noise can be heard also. Sometimes it will stay in OD and not downshift with moderate acceleration Is this normal?
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post #2 of 4 (permalink) Old 05-04-06, 04:31 PM
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Re: what speed should OD engage?

The groaning or rattle might be something bad. "Kick down" (to a lower gear) happens as the PCM sees fit. If you're only moderately accellerating it might not kickdown.

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post #3 of 4 (permalink) Old 05-04-06, 05:06 PM Thread Starter
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Re: what speed should OD engage?

It is heard when moderately accelerating while in OD without a kickdown. Once it downshifts it goes away.
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post #4 of 4 (permalink) Old 05-04-06, 08:17 PM
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Re: what speed should OD engage?

if it's an 05 it should be under warranty You might want to have it looked at.

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